Galvanic battery



R. SCHLUMBERGER.

GalvaniQ-Battery.

N0.221,448. Patented May 1i, 1880.'

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UNITED STATES PATENT OFFICE.

ROBERT SCHLUMBERGER, OF MEDFORD, MASSACHUSETTS.

GALVAN I C BATTE RY.

SPECIFICATION forming part of Letters Patent No. 227,448, dated May 11,1880.

' Application filed December 22, 1879.

To all whom t may concern Be it known that I, ROBERT SCHLUMBER- GER, ofMedford, in the county f Middlesex and State of Massachusetts, haveinvented certain new and useful Improvements in Electric Batteries, ofwhich the following is a specification.

My invention relates to an improvement in reservoirs for electricbatteries which are provided with upper reservoirs containing theoperating liquid in a very concentrated or crystallized form, and with acommunicating pipe through which said concentrated liquid is conductedinto the battery-cup below.

The object of my invention is a more constant and uniform supply to thebattery-cup than has heretofore been secured. This object I attain bythe device illustrated in the accompanying drawing, Which shows myimproved battery in vertical central section. b

Similar letters refer to similar parts in the drawing.

A represents the battery cup; B, a zinc cathode; C, a copper anode; D,the supposed upper surface or limit of the lower concentrated liquid; E,the top surface of the lighter and refuse liquids; F and G, theconducting wires, all of which are constructed and arran ged in theordinary manner, and require no further description.

Over the battery-cup A a suitable stand or frame, K, is placed,whereby areservoir, H, is held suspended over the battery-cup. The said reservoiris closed up by a stopper, h, of suitable material, and into thisstopper two pipes, I and J, are inserted. The reservoir is h'lled withthe crystals of sulphate of copper and with liquid sulphate of copper.It is then closed by the stopper, inverted, and placed upon the frame K.The pipe I thus connects the lower parts of the reservoir andbatterycup, and the pipe J the higher parts. The pipe J must be highenough to be entirely clear of the crystals in the reservoir.

During the operation of the battery the refuse liquid which is formedaround the zinc cathode is gradually crowded to the center of thebattery-cup by the operating liquid or sulphate of copper, and beinglighter than the said operating liquid, it ascends through the pipe Jand accumulates above the crystals in the reservoir. At the same timethe operating liquid in the battery-cup is continually deprived of itsbasis, (oxide of copper,) which descends to the bottom of thebattery-cup; but in the sa-me degree as this takes place the crystals inthe reservoir become dissolved by the weakened portions of the operatingliquid and continually recruit the -liquid below, descending through thepipe I into the range of the copper anode.

By adjusting the pipe I at a higher or lower elevation the upwardcurrent may be accelerated or retarded, and the battery made more orless powerful. A similar adjustment of the pipe J will be accompanied bythe same results.

By a judicious adjustment of both pipes I and J the surfacev D may bekept at the most advantageous elevation for the uniform operation of thebattery.

It will be seen that by means of the pipes I and-J the two liquidsmoving in opposite di-A rections are separated, and thus are preventedfrom interfering with each other by means of mutual friction, or byforming an intermediate bar between the reservoir and battery-cup, ashas been observed in batteries with only one supply or communicationpipe; and while in the batteries of old construction the ascendingliquid must pass through the crystals, thereby periodically insulatingthe same and cutting off the supply of the battery, in my constructionthe pipe J conducts the said liquid above the level of the crystals andprevents all interference with the uniform supply of the battery.

I do not claim the combination of abattery,

reservoir, and communicating pipe, broadly, for reasons above indicated;but

What l claim, and desire to secure by Letters Patent, is-

1. The combination of an electric battery, a reservoir containing asupply of operating liquid, and two communicating pipes for separatingthe ascending and descending liquids, substantially as set forth.

2. In an electric battery with reservoir, the pipes I and J, constructedand operated as set forth.

In witness whereof I hereunto set my hand this 14th day of December,1879.

ROBERT SCHLUMBERGER.

In presence of- R. BOEKLEN, R. H. THOMPSON.

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